Ok I will give you the cliff notes version of the story. We had a 4A Guar, on the miracle, but my DW decided that she really wanted a balcony. So we got upgraded to 8c number 4230.
Well of course my TA screwed a lot up, and even talking to a manager didnt help. To make a long story short I finally got it all worked out. Of course this only happened when i called to cancel. I would have lost my insurance, but it has been that bad. I was going to rebook directly through carnival.
Anyway they bumped me to 7351 free of charge. So is 7351, (deck 7 aft balcony) a better location than 4230 (deck 4 aft balcony). I have always been inside, so we have never had a balcony before, and i am just wondering if the higher ones are really better.
I know they cost more, but more expensive does not always mean better.
We just got back from the Spirit in May. We had cabin 8171. If you look at the picture of the ship, (on Starboard or right side), where you see the jutted out area in the middle of the ship, we were to the front of this area, about eight balconies from that jutted part. On the Spirit this was the highest passenger deck, but husband and I probably wouldn't book it again. We were underneath the Lido deck, which has the buffet lines. You could really hear the scrapping sound of chairs and around 5 am you would hear the janitor staff moving chairs. That scrapping noise kinda got on my nerves after a while. I don't know much about the Miracle, but if it's anything like the deck plan for the Spirit, I would think that you cabin would be fine. I have read on these posts that it's usually better to be between two passenger decks. I would book a cabin next time on deck 7.
Look at the deck plan of your ship and see if you are actually between the decks that house passenger rooms and if so, you are probably ok.
We went to Alaska and had the balcony...best money we ever spent!